STAR and DELTA connection of Three-phase Squirrel-cage Electric Motors
STAR
L1
L2
DELTA
L3
E
L1
L2
L3
E
To change direction of rotation swap any two Life (L1, L2, L3) inlet leads.
W2
U2
V2
U1
V1
W1
U2
V1
V
U U1 W2
W
Connection when a STAR-DELTA STARTER is used. For connection of the six leads please follow instructions supplied with your STARTER. V2
W1
IMPORTANT ! Always check the motor nameplate for correct STAR (Y) and DELTA (D) voltage. Ask if in doubt ! Incorrect wiring will damage the motor and invalidate the Warranty! ROTOR (UK) LIMITED, 16 Everitt Close, Denington Industrial Estate, Wellingborough NN8 2QF Tel 01933 230900 Fax 01933 272152
[email protected] www.rotor.co.uk